Fuels and Combustion Archives

In case of pulverised coal fired steam boiler, the secondary air serves the main purpose of__________________?

August 25, 2021March 7, 2019 by admin

In case of pulverised coal fired steam boiler, the secondary air serves the main purpose of__________________?

A. Transportation of coal
B. Drying of coal
C. Combustion of coal by supplying it around the burner
D. Preheating the primary air

_____________ of the coal is the basis for Seylor’s coal classification?

August 25, 2021March 7, 2019 by admin

_____________ of the coal is the basis for Seylor’s coal classification?

A. Proximate analysis
B. Ultimate analysis
C. Caking index
D. Calorific value

The shift conversion reaction taking place during water gas manufacture is given by__________________?

August 25, 2021March 7, 2019 by admin

The shift conversion reaction taking place during water gas manufacture is given by__________________?

A. C + H2O ↔ CO + H2
B. C + 2H2O ↔ CO2 + 2H2
C. CO + H2O ↔ CO2 + H2
D. None of these

Main component of sewage gas produced during anaerobic decomposition of organic waste (by suitable bacteria) during sewage disposal is __________________?

August 25, 2021March 7, 2019 by admin

Main component of sewage gas produced during anaerobic decomposition of organic waste (by suitable bacteria) during sewage disposal is __________________?

A. H2
B. CH4
C. CO2
D. N2

Caking index of a coal is a measure of its _______________________?

August 25, 2021March 7, 2019 by admin

Caking index of a coal is a measure of its _______________________?

A. Abradability
B. Reactivity
C. Agglutinating (binding) properties
D. Porosity